/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using System;
using ASC.Web.Core.Calendars;

namespace ASC.Api.Calendar.BusinessObjects
{
    public class EventNotificationData
    {
        public int TenantId { get; set; }
        public Guid UserId { get; set; }
        public int EventId { get; set; }
        public Event Event { get; set; }
        public DateTime NotifyUtcDate { get; set; }
        public RecurrenceRule RRule { get; set; }
        public EventAlertType AlertType { get; set; }
        public TimeZoneInfo TimeZone { get; set; }

        public EventNotificationData()
        {
            RRule = new RecurrenceRule();
        }

        public DateTime GetUtcStartDate()
        {
            if(Event==null)
                return DateTime.MinValue;

            if(RRule.Freq == Frequency.Never)
                return Event.UtcStartDate;

            return NotifyUtcDate.AddMinutes((-1) * DataProvider.GetBeforeMinutes(AlertType));
            
        }

        public DateTime GetUtcEndDate()
        {
             if(Event==null)
                return DateTime.MinValue;

             if (RRule.Freq == Frequency.Never || Event.AllDayLong || Event.UtcEndDate == DateTime.MinValue)
                return Event.UtcEndDate;
            
            return GetUtcStartDate().Add(Event.UtcEndDate - Event.UtcStartDate);
        }

    }
}
